KSMN (SMN) Lemhi County Airport — Charts, Approach Plates & Operations
6 official charts for Lemhi County Airport (KSMN / SMN) — airport diagrams, instrument approach procedures, SIDs, STARs, and operational information for pilots.
KSMN Airport Charts & Approach Plates
Official charts for Lemhi County Airport published by the national aviation authority. Updated every 28 days per AIRAC cycle. All links open the official PDF source in a new tab.
Instrument Approach Procedures (IAP) 5
Takeoff Minimums 1
Airport Operations
Lemhi County Airport is an uncontrolled public-use airport at 4044 ft elevation with a single asphalt runway 17/35 (5510x75 ft). The airport has pilot-controlled lighting including MIRL, REIL, and PAPI on runway 17, with UNICOM/CTAF on 122.8 MHz. Special considerations include right traffic for night operations on runway 17 and cold temperature altitude corrections below -12°C.
Fuel & Services
- Fuel Available
- Yes
- Fuel Types
- AVGAS 100LL JET-A1
- Operating Hours
- 0800-1700
Parking & Handling
- GA Parking
- Available
- Details
- Aircraft ramp available, taxiway access to aircraft ramp located on SE end of airport is closed
- Landing Fees
- No landing fee
Published Approach Procedures
Special Procedures
Use right traffic pattern for night operations only on RWY 17. Cold temperature airport - altitude correction required at or below -12°C
PPL / GA Operations
No control tower - use CTAF 122.8 MHz. Activate runway lighting via CTAF (MIRL RY 17/35, REIL both ends, PAPI RY 17). Right traffic pattern for RWY 17 night operations only, otherwise left traffic for RWY 35. Retroreflective reflectors on parallel taxiway and ramp area. SE ramp access taxiway closed. AWOS available on 135.075 MHz.
Source: AIP data extracted Apr 8, 2026. Always verify with official AIP before flight. View source
Radio Frequencies
4 frequenciesUsage Instructions:
Aeronautical Information Publication (AIP)
✓ Free Access
Access Information:
Freely accessible online
Access details: Public
Frequently Asked Questions
How many charts are available for KSMN (SMN) Lemhi County Airport?
We list 6 official charts for KSMN, including airport diagrams, instrument approach procedures (IAP), SIDs, STARs, and visual approaches sourced directly from the official AIP.
Where can I find instrument approach plates for KSMN?
All instrument approach procedures (IAP) for KSMN (SMN) Lemhi County Airport are available on this page, linking directly to the official PDF charts published by the aviation authority. These include ILS, RNAV/GPS, VOR and LOC approaches for all runways.
Are the charts for KSMN free?
Yes, all chart links on this page point to official free sources including FAA d-TPP, EUROCONTROL eAIPs, and national aviation authority publications. No subscription required.
How often are charts updated?
Official charts follow the AIRAC cycle and are updated every 28 days. The links on this page always point to the current effective cycle from the official source.